Fire-proof paint



8 M) {AVA} L UNITED STATES Cross Reference PATENT OFFICE.

ISAAC L. MERRELL, OF SAN FRANCISCO, CALIFORNIA.

FIRE-PROOF PAINT.

SPECIFICATION forming part of Letters Patent No. 446,922, dated February 24, 1891.

Application filed September 24, 1890. Serial No. 366,014. (No specimens.)

To all whom it may concern:

Be it known that I, ISAAC L. MERRELL, a citizen of the United States, residing at San Francisco, in the countyof San Francisco and State of California, have invented a new and useful Composition of Matter to be Used as a FireProof Paint, of which the following is a specification.

My composition consists of the following ingredients, combined in the proportion stated, viz: alnminum one part, by measure; asbestus, pulverized, one part, by measure;

soa )stone pulverized, one part, by measure; silicate 5T da, one part, by measure; ma- 1165121, one part, by measure; mica, reduced Iiy' trituration, one part, by measure; fire-proof cla pulverized, one part, by measure. To t is compound or mixture I then add some suitable ggloripg matter or substance to produce paints o cifferent colors. For example, to make a white paint I add pulverized gypspm and zinc-w 'te in the proportion of one par each, y measure, and in like manner 1 add any coloring substance in suitable proportion to give the desired color or shade to the paint. These ingredients are to be thoroughly mingled by trituration or agitation, after which suflicient T lue watgr and lime-water are addedin equa propor ions, by w measure, to bring the mass to the consistency of cream, or thereabout. It is then passed through an ordinary paint-grinding mill, after which it is lit for use in the ordinary way of applying paints to surfaces.

It will thus be seen that my paint compound contains no inflammable ingredients whatever, and may therefore be termed a fire-proof paint.

Having thus described my new paintcomposition, what I claim, and desire to secure by Letters Patent, is-

The herein-described composition of m atter to be used as paint, consisting of aluminum, asbestos, soapstone, silicate of soda, magnesia, mica, fire-proof clay, lime-water, and acohesive liquid, such as glue in solution, W'.ll1 or without suitable coloring matter or substance, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand and seal.

EXAMINER 

